Donald Trump has joined the growing clamor for Joe Biden‘s White House doctor to be investigated for giving the former president a clean bill of health months before he revealed he had an aggressive form of prostate cancer.

Recent studies show that survival for men with prostate cancer that has spread to the bone is just under two years. But this form of cancer, though aggressive, can sometimes be controlled. Here's what oncologists who treat prostate cancer say are the most common strategies for treating a cancer like Biden's, and some of the challenges.